Ads
related to: luminous vs illuminous oil treatmentsallybeauty.com has been visited by 10K+ users in the past month
1735 Olentangy River Road, Columbus, Ohio · Directions · +1 614-461-3898
- Discover Freewill - New!
Deeply Clean & Promote Scalp Health
Freewill: Hair Cycling Experts
- The Latest in Hair Color
Trending Vibrant Shades this Season
Products from ion, Wella, and more!
- Virtual Hair Consultation
Free & Fast Hair Color Consultation
Connect With a Licensed Colorist!
- Up to 50% Off Hair Care
BOGO 50% Big Bottle Hair Care
Stock Up On Your Faves!
- Discover Freewill - New!
Search results
Results from the WOW.Com Content Network
Radioluminescent paint is a self-luminous paint that consists of a small amount of a radioactive isotope (radionuclide) mixed with a radioluminescent phosphor chemical. The radioisotope continually decays, emitting radiation particles which strike molecules of the phosphor, exciting them to emit visible light.
As in many chemical reactions, chemiluminescence starts with the combining of two compounds, say A and B, to give a product C. Unlike most chemical reactions, the product C converts to a further product, which is produced in an electronically excited state often indicated with an asterisk:
Luminous energy: Q v [nb 3] lumen second: lm⋅s T⋅J: The lumen second is sometimes called the talbot. Luminous flux, luminous power Φ v [nb 3] lumen (= candela steradian) lm (= cd⋅sr) J: Luminous energy per unit time Luminous intensity: I v: candela (= lumen per steradian) cd (= lm/sr) J: Luminous flux per unit solid angle: Luminance: L v ...
The luminous efficiency of a light source is thus the percentage of luminous efficacy per theoretical maximum efficacy at a specific wavelength. The amount of energy carried by a photon of light is determined by its wavelength. In lumens, this energy is offset by the eye's sensitivity to the selected wavelengths.
Illuminance diagram with units and terminology. In photometry, illuminance is the total luminous flux incident on a surface, per unit area. [1] It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. [2]
The standard luminous efficiency function is normalized to a peak value of unity at 555 nm (see luminous coefficient). The value of the constant in front of the integral is usually rounded off to 683 lm/W. The small excess fractional value comes from the slight mismatch between the definition of the lumen and the peak of the luminosity function.
The main difference between the luminous efficacy of radiation and the luminous efficacy of a source is that the latter accounts for input energy that is lost as heat or otherwise exits the source as something other than electromagnetic radiation. Luminous efficacy of radiation is a property of the radiation emitted by a source.
Views of a liquid crystal display, both with electroluminescent backlight switched on (top) and switched off (bottom). Electroluminescence (EL) is an optical and electrical phenomenon, in which a material emits light in response to the passage of an electric current or to a strong electric field.
Ads
related to: luminous vs illuminous oil treatmentsallybeauty.com has been visited by 10K+ users in the past month
1735 Olentangy River Road, Columbus, Ohio · Directions · +1 614-461-3898